Reference library
The architecture of verse.
A working taxonomy of 21 poetic forms — from the strict 14-line sonnet to the breath-driven landscape of free verse. Each entry has a definition, a place in tradition, and famous examples drawn from the public-domain corpus.
Active generators
Seven of these forms have working generators.
Sonnet
Strict 14-line architecture in iambic pentameter, closing on a couplet that pivots or punctures.
Free Verse
No metrical or rhyming mandate. Form by attention — every line break is a decision.
Acrostic Poem
First letters down the left margin spell the topic.
Blank Verse
Iambic pentameter, unrhymed. Shakespeare's plays in this register.
Haiku
5-7-5 syllable micro-structure. Anchored by a kigo, cut by a kireji.
Limerick
AABBA. Anapestic. The form built for the punchline.
Ode
A formal lyric of address — speaker stands before a subject and speaks to it.
Complete typology
The full registry.
21 structural frameworks, grouped by their governing constraints. Click any form for its definition, history, and famous examples.
01
Strict closed forms
Highly constrained architectures defined by explicit rules — meter, rhyme scheme, syllable count, line repetition. The rule-bound canon.
Ghazal
Autonomous couplets with a recurring refrain in the second line.
Haiku
Three lines, 5-7-5 syllables, traditionally anchored by a kigo.
Limerick
Five lines, AABBA, anapestic — built for the punchline.
Ode
A formal lyric of address — Pindaric, Horatian, or irregular.
Pantoum
Interlocking quatrains; lines 2 and 4 become 1 and 3 of the next stanza.
Sestina
39 lines, no rhyme — six end-words rotate through a strict pattern.
Sonnet
14 lines, iambic pentameter, ABAB CDCD EFEF GG (Shakespearean).
Tanka
Five lines, 5-7-5-7-7 syllables. The haiku's longer ancestor.
Villanelle
19 lines, two refrains rotating across 5 tercets and a quatrain.
02
Modern & open frameworks
Forms built on organic rhythm, thematic flow, or the deliberate subversion of traditional architecture. Post-Whitman flexibility.
Blank Verse
Strict iambic pentameter, but unrhymed. Shakespeare's plays in this.
Free Verse
No prescribed meter or rhyme. Cadence and image carry the weight.
Lyric Poem
First-person expression of pure emotion or interiority.
Prose Poem
Poetic language formatted in standard prose paragraphs.
Slam Poetry
Designed for vocal performance — page-versus-stage by way of stage.
03
Traditional storytelling
Forms historically engineered to relay plot, history, lament, or encoded messages. Narrative work that predates the printing press.
Each form's definition starts with the relevant Wikipedia article — the closest thing we have to a consensus reference for English-language poetics. We summarize it, humanize the prose, and check the result against the original.
The famous-poem examples on every form's deep page come from our public-domain corpus, sourced from Project Gutenberg and Wikidata. Nothing under copyright; nothing scraped without provenance.
- Forms indexed
- 21
- Source corpus
- Public domain
Sister library
Visit the literary devices index.
Forms are the architecture; devices are the carpentry — alliteration, enjambment, metaphor, and the rest of the line-level toolkit.
Inquiries
What's the difference between a form and a device?
A form dictates the whole-poem architecture — line count, rhyme scheme, repeating refrains. A device (alliteration, enjambment, metaphor) is a line-level move applied inside the form. You write devices into a form.
How were these 21 forms chosen?
We picked the forms most consistently named in English-language literary references — the canon plus a handful of non-English forms (haiku, ghazal, pantoum, tanka) that have entered English practice. We exclude one-off contemporary inventions until they show staying power.
Why don't you have [X form]?
If a form is well-attested in literary scholarship and we don't have it yet, we probably will. The library grows as we add public-domain examples that ground the entry.
Why do only 7 forms have generators?
Generating valid output for a strict form requires both reliable model adherence and a deterministic check we can verify. The 7 launched generators clear that bar. Others (villanelle, sestina, ghazal) are harder to verify automatically and stay reference-only for now.